Lightning rod



FIG. 1 is a top view of the lightning rod;

FIG. 2 is a right-side view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a perspective view of thereof;

FIG. 5 is a front view thereof (the rear view is identical to the front view); and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a lightning rod, as shown and described. 